百度试题 结果1 题目The light bulb was invented in which year? A. 1879 B. 1885 C. 1903 D. 1911 相关知识点: 试题来源: 解析 A。托马斯·爱迪生在 1879 年发明了电灯。反馈 收藏
Although LED was invented in the 1920s, a practical visible light LED technology was not introduced commercially until the early 1960s and now used for indicators in electronics devices. More recently LEDs are used for lighting and in advanced displays as well. Initially, transparent and ...
A.does; invent B.is; invented C.did; invent D.was; invented 免费查看参考答案及解析 题目: 语境从方框中选择恰当的单词填空,有的需要变换形式。 light, out, possible, environment, moonlight, out, possible, environment, moon 【1】The ___ is smaller than the earth.【2】Which travels faster,...
aWe study everyday.when we study at night,we need use light.everybody knows that the light was invented by Edison.but do you know when was it invented? 我们学习我们在晚上学习的everyday.when,我们需要用途light.everybody知道光是由Edison.but发明的您知道当是它发明了时?[translate]...
The room was lighted by a very small, dim bulb. For both meanings of light, you use lighted, not 'lit', in front of a noun. Mitchell took the lighted cigarette from his lips. I noticed a lighted window across the street. However, after an adverb you use lit. ...a freshly lit ci...
Related to speed of light:light year,E=mc2 ThesaurusAntonymsRelated WordsSynonymsLegend: Switch tonew thesaurus Noun1. speed of light- the speed at which light travels in a vacuum; the constancy and universality of the speed of light is recognized by defining it to be exactly 299,792,458 me...
If the light was kept steady, the dolphins were supposed to press the levers in reverse order. 出自-2012年6月听力原文 The levers and light were set up in exactly the same way except that this time it was only Doris who could see the light indicating which lever to press first. 出自-20...
It was to make Winterbottom an offer for a cultivator which Winterbottom wanted to sell. At last Armstid looked at the sun and offered the price which he had decided to offer while lying in bed three nights ago. “I know of one in Jefferson I can buy at that figure,” he said.“I...
The term "light-year" was invented because, simply put, the equivalent distances in miles, meters or kilometers were huge. History of the light-year The first mention of light-years dates back to 1838 and a German scientist named Friedrich Bessel. He measured the distance to a star ...
Michael:It was invented in 1879.Jane:Who invented it?Michael:Thomas Edison.It's said that he invented more than two thousand things during his life.Jane:What about the radio?Michael:The radio was invented by Guglielmo Marconi in 1895.Jane,let's go this way.Look!An airplane,but it's ...